Child&#39;s toy building block



1. Child's toy building block

1.1 : Perspective

1.2 : Perspective

1.3 : Top

1.4 : Bottom

1.5 : Front

1.6 : Left

The back side view long is omitted as it is a mirror image of the front; the right side view short is omitted as it is a mirror image of the left side. 

CLAIM The ornamental design for a child's toy building block, as shown and described. 